Steinberg Nuendo Time Base, Operation Manual

Page: 90 / 92

TIME BASE
9 – 90 Glossary
INT Internal speed reference produces by the internal crystal oscillator in
Time Base. This is selected, if no external reference (video or Word
Clock) is needed.
Jam Sync A technique that is used to start the Time Code Generator from (ex-
ternally) running Time Code. Can be used to ”extend“ existing Time
Code on a partly striped tape.
Jitter Unwanted (and often unnoticed) variation in the frequency of an out-
put Word Clock, usually caused by poor design or inferior compo-
nents, which in turn causes a deterioration in the quality of any digital
audio signals that are synchronized to it. The deterioration increases
with the amount of variation.
LCD Abbreviation for Liquid Crystal Display – Time Base uses this type.
LED Abbreviation for Light Emitting Diode.
Lock Time Base is locked to the selected system reference (CL:).
LTC Longitudinal Time Code – Time Code information, biphase encoded,
so that it can be recorded on an audio track of a VTR or ATR.
Machine Control This term stands for a complex range of transport control commands.
from basic motion commands, synchronization to more complex edit-
ing functions like electronic video editing.
Machine Machine refers to an audio or video tape record/playback system.
MIDI Musical Instrument Digital Interface – A serial data protocol used by
electronic instruments, signal processors and sequencers. It is used
to transfer information like e.g. pitch, rhythm, and other data. Special
data sets are reserved for MIDI TIME CODE and machine control.
The MIDI transmission speed is 31,25 kbits per second.
MIDI Time Code MTC – MIDI TIME CODE – A MIDI message used to define a fixed
address for an exact point in time. “Running” MTC needs eight quar-
ter-frames or two frames to send a complete address. Furthermore
special formats for MTC transfer have been developed.
MMC Abbreviation for “MIDI Machine Control”.
Motion Controls The basic set of machine control functions (Play, Stop, Record,
Rewind and Fast Forward) see SP1, page 62.
MTC See MIDI Time Code
Multitrack Analog or digital tape machine, with more than two tracks.
Non Drop Frame NDF or ND is one of two SMPTE Time Code standards and it was
used in connection with the U.S. black & white television standard.
NDF counts each frame in the time code in real time.